Match don't start

Excuse me for my english, i'm from Italy. Yesterday I signed up for Borussia Monchengladbach in Bundesliga with other friend in Herta Berlino and Werder Bremen. We have first bundesliga's match at 20.00 o'clock but when timer arrived to 00.00.00 Match didn't start (now in OSM app i can read "game postponed" but there's no timer). What can i do? please help us